Boston bomb attack perpetrators Use Pipe Bomb

Boston Actors bomb attack allegedly using pipe bombs.It was revealed after a bomb expert United States (U.S.) Fred Burton sent it to blast. 

Burton stated, smoke bomb blast in Boston is
 very similar to the smoke caused by the explosion of a pipe bomb. He is also suspected pipe bomb that contains gunpowder high strength, 

"It is difficult to make a pipe bomb, but it takes practice to make it work a few times," Burton said, as quoted by U.S. News, Tuesday (04/16/2013). 

Boston bomb attac

Bomb blast Bost Burton is a former special agent in charge of embassy security guard at the U.S. Government overseas. He had helped authorities investigate peritiwa 1993 WTC bombing ago. 

"Actors are very smart bombs choose targets. Marathon was attended by many people, definitely a big mess happened when the bomb exploded, "said Burton. 

Until now there has been no claim of responsibility for the bomb attack. The police themselves are still looking for clues that could lead them to the perpetrators of the attack.